var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var ejs = require('ejs'); //引入的ejs插件
var session = require('express-session');//sessions中间件


var index = require('./routes/index');
var users = require('./routes/users');

//获取路由模块
var subform = require('./routes/subform');
var usesession = require('./routes/usesession');
var usecookies = require('./routes/usecookies');
var usecrypto = require('./routes/usecrypto');


var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
// app.set('view engine', 'jade');

//将HTML作为渲染模板
app.engine('html', ejs.renderFile);
app.set('view engine', 'html');


// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
//使用靠就这个中间件
app.use(session({ secret: 'wilson'}));

app.use(express.static(path.join(__dirname, 'public')));

app.use('/', index);
app.use('/users', users);

// 设置路由
app.use('/subform', subform);
app.use('/usesession', usesession);
app.use('/usecookies', usecookies);
app.use('/usecrypto', usecrypto);


// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handler
app.use(function(err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render('error');
});

module.exports = app;